In fact, he had brought them the truth and had acknowledged the Messengers (who were sent before him).
Allah swt. berfirman: (Sebenarnya dia Muhammad telah datang membawa kebenaran dan membenarkan rasul-rasul) yang juga datang membawa kebenaran, yaitu kalimat Laa Ilaaha Illallaah/tidak ada Tuhan selain Allah.